impregnably

the castle was impregnably fortified against any attack.

the city's defenses were impregnably strong, deterring invaders.

the data was stored impregnably on a secure server.

the company's intellectual property was impregnably protected.

the research facility was built impregnably to withstand earthquakes.

the vault was designed impregnably to safeguard the treasure.

the system was programmed impregnably to prevent unauthorized access.

the fortress stood impregnably on the hilltop, overlooking the valley.

the nation's borders were impregnably guarded by the military.

the evidence was presented impregnably, proving the defendant's guilt.

the argument was presented impregnably, leaving no room for doubt.